Furnace



w. VVHINEHLS.

FURNACE.

APPLICATION FILED MAR.19, 1919.

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APPLICATION FiLED MAR. 79. 1919- v mmm Bea. 14,1920.v

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, WHW JWIN" PNETERSTATES "PATENT OFFICE@ A "itiI-IL'IAM H. NEHLS.. 0r FORTAGE; iriscoirsnyr;k

"FURNACE Tod/whole t muy conce/11:

Be 1t known-that l.

a citizen of` thewbnited States. residlng at Portage. ,'inwtheacounty of Columbia' and State of visconsiinyhave invented certain new' and useful*improvements in l* urnacesv ofI which the folloivlng is a specification.

@This invention:relatesto hot air furnaces.

and an object of the invention is to provide a hot,j, airfurnace. `yvherein a maximum radiating surffaceyvill be provided, to insure the proper heating of the'air. during its passagethrough kthe furnace and priorlto its deh-very into thefroom to be heated.

Anotherobyect of the invention is to provide.y iria hot air furnace. a sectional radiator structure.` in connection with a chimney or stack draftarrangement which yvill direct the product of combustion from the lire-box ofy the furnace. through each section of tvheiradiatorsprior to its exit from the furnace; also to provide a sectional radiator wherein the heating surface will be matcrially increased over the heating surface of hot air furnaces commonly in use. resulting ina material saving` of fuel` necessary to properly heat the air passing through the furnace. i

Y furtherl object of the invention is to provide a draft. arrangement for the furnace. yvhichxvill direct the gases or products of combustion upwardly through the casing ofthe furnace in lieu of directing them toward the rear of the furnace.

Other objects ofthe invention will appear fromu the following detailed description, taken in connection with the accomcommunicating with the interior thereof near the bottom of the casing, and it has .a plurality ofhot or heated air outlet or exit pipes 3 connected thereto and communicating with its upper end, for conveying the heated air to any desired location.

The casing 1 also has theusual'form of Specification of Letters Patent.`

lYILLL-ur H. Nrn-Ins.

` Patented Dec. 14, 1920. i

'nlr l -l-"Application filed March 19, 1919. Serial No. 283.532.

tire box l positioned centrally therein. access to yvhich is gained through a door 5 in the casing. An ash pit 6 is formed within the casing 1 beneath the' grate T of the :lire box. and a door S communicates'ivith this ash pit to permit the shaking of the grate T and the removal of ashes from the pit.

As ivill be noted. by reference to Fig. 2 of the drawings. the tire box l and the ash pit 6 take up only a portion of the yinterior ot' the lower part of the casing 1.

A sectional radiator structure is posi- Vtioned above the tire box f1' and it includesv a plurality of vertically extending plates 9. certain of which have their upper and lower end connected by horizontal plates '10. These plates 9 and 10 provide a plurality of spaces. 11 and 12. The spaces 12 have communication with the interior of the fire box l. for permitting the upward passage of the product of combustion from a fire in the fire box. These products of combustion pass from the spaces 12. through relativelysmall openings 13. into a horizontal pipe 1l which extends transverselyv through the casing l. near thev upper end thereof and does not have communication with the spaces or compartments 11. The pipe 1-1 projects beyond the front side of the casing 1 and has a removableI cap 15 mounted thereointo permit of cleaning of the interior of the pipe. The end of the pipe opposite from t-he cap 15 projects outwardly through the rear side of the casing 1 and has communication with the stack 16 of the furnace structure. This stack l6has communication. at its lower endfwith a horizontal pipe 17. The horiziontal pipe 1T enters the casing l and has communication iviththe rearmost compartment l2, as clearly shown in Fig. 1 of the drawings. A dampeizlS of the butterfly type is positioned Within the pipe 17' between its communication with its rearmostl compartment 12 and 'the stack 16 for regu- '.lating the draft through the fire-box ,.4 and stack .16.l Then the damper 18 is closed. all of the products of combustion from the fire-box 4 are forced to travel upwardly through the spaces '12. openings 13, into the fpipe 14. throughwhich they are drawn into xfHowever, by adjustment of the damper 18, gthe quantity of the` product of combustion passing upwardly `through the spaces 12 may be regulated, and consequently the heating of the various plates 9 and 1 0 may "the stack 16 for latmospherical distribution.

tioned alternately with respect to the spaces l2, so that the air, passing upwardly therethrouglnwill be subjected to the radiating y heat froriifthe plates ldand 9, upon each side of the" respective space through which the air istraveling, consequently resulting in the thorough heating of the fresh air` and lp/ ern'iitting the maximum heating of the air upon,theutilization of a 1ninimum' .qiiantity of' fuel, in'the lire box. It

i ,is fa well y' known fact that heated air will Q2@ .it will rise into the top of the casing l above risepfand as'the fresh air becomes heated,

the upper ends of the various compartments .or spafcesll and 12, and passoutwardly to the pipes 3 for distribution at the desired point or points. It is to be noted that the radiator construction extends outwardly on opposite sides of the ire box and the lower ends of 4the spaces which project beyond theire box` are open at their lower ends, so as to.' permit the fresh air entering the 'casing toflow through the said spaces 11.

The o ut'er end of the pipe 17 is closed by a hinged closure 19 which permits access to the'interior of the said pipe for cleaning'it. i i

`From the foregoing description, taken in i connection with the'accompanying drawings,`. it will he seen that a hot air furnace, embodying a maximum radiating surface, for heating the fresh air is provided, and that'snch'a furnace will Jfurther permit the heating of the air tothe desired thermal degree,with the useof, amuch less quantity of fuel than is necessary to heat the air-to the same ydegreeii'i hotairfurnaces, commonly in use.

\ .Changes inn-details may be made without departing from` the spiritV of this invention,

l. In a hot air furnace, the combination, of a casing, a fire-box within said casing, a plurality of vertical and horizontal plates. within' said casing and dividing the space .above said fire-box intoa plurality of verti cal compartments, the alternate ofv said compartments having communication with said fire-box, a pipe extending' horizontally through said casing near the upper end of .said compartments, said pipe provided with through said casing near the upper vend of` said compartments, said pipe provided with a plurality of openings each communicating with one of said alternate compartments, a stack having communication withv one end of said horizontal pipe, a second horizontal pipe having communication with said alternate compartments near their lower ends, and with said stacks, and a damper in said last mentioned horizontal pipes to regulate the communication between 'the stack and said compartments,

inear their lower ends.

3. In a hot air furnace, the combination, of a casing, a'fire-box Within said casing, a plurality of vertical and horizontal plates within said casing and dividing thespace above said fire-box into a plurality of vertical compartments, the alternateof said compartments having communication with said fire-box, a pipe extending horizontally through said casing near the upper end of said compartments, said pipe provided with a plurality of openings each communicat ing with one of said alternate compartments, a` stack having communication with one end of said horizontal pipe, a second horizontal pipe having communication with said alternate compartments near their lower ends, and with said stacks, a dampery in said last mentioned horizontal pipes to regulate communication between the stack and said compartments, near their lower ends, the spaces adjacent said alternate compartmentsy having communication with the interior of the casing exteriorly of the fire-box, a fresh air inlet at the lower end of said casing and outlet pipes having communication with' the Lipper end of said casing forreceiving air lfrom said adjacent compartments.

WILLIAM H. vNEHLS. 

